Can-opener.



M. P. NEWGOMB. CAN OPENER.

- APPLICATION FILED 0012s, 1909.

Patented Feb.6,1912.

3 SEEETS SHEET 1.

- Snoznfoz warm w J COLUMBIA PLANOGRAPH cc WASHINGTON, n. c.

M. P. NEWGOMB.

0m OPENER.

APPLICATION FILED OUT. 26, 1909. 1,016,513. Patented Feb. 6, 1912.

3 SHEETS-SHEET 2.

M. P. NEWGOMB.

CAN OPENER.

APPLICATION FILED OUT. 26, 1909.

1,016,513, Patented Feb. 6, 1912.

3 SHEETSSHEET 3.

u u u u v u u u u u I w u u u nu 3110a nl'on LANODRAPH co., WASHINGTON,D. c

wamwm v Mad MICHAEL P. NEWGOMB, OF SANDPOINT, IDAHO.

CAN-OPENER.

Specification of Letters Patent.

Application filed October 26, 1909.

Patented Feb. 6, 1912.

Serial No. 524,619.

To all whom 1' t may concern:

Be it known that I, MICHAEL P. NEwooMB, a citizen of the United States,residing at Sandpoint, in the county of Bonner and State of Idaho, haveinvented a new and useful Improvement in Can-Openers, of which thefollowing is a specification.

This invention relates to can openers, and more particularly to thatclass of openers in which the knife is held stationary and the can isrevolved below the same, the object being to provide a can opener with arevoluble table having means for clamping a can thereon in such a mannerthat the can can be easily and quickly secured in position or removedtherefrom.

Another object of my invention is to provide a knife which is carried bya spring actuated shank in such a manner that after the knife has beenforced down through the top of the can it will be held in that positionso that when the can is revolved under the same a circular out will beformed in the top of the can so that the intermediate portion can bereadily removed in order to enable the contents of the can to be readilyremoved.

A further object of the invention is to provide the revoluble table withclamping jaws which are operated in such a manner that they can bereadily expanded or contracted in order to suit different sized cans.

A still further object of the invention is to provide means foradjusting'the knife with respect to the table whereby the same can beadjusted so as to out different sized cans.

Still another object of this invention is to provide a can opener whichis especially adapted to be used in hotels where it is necessary to opena great number of cans at once, said can opener being adapted to besecured to a table or other suitable support whereby it will only benecessary to securethe can upon the revolving table and by operating acrank the can will be revolved under the cutting knife.

A still further object of the invention is to provide a can opener whichis exceedingly simple and cheap in construction and one in which theparts are so arranged and connected together that they can be easily andquickly attached or detached.

Another object of my invention is to provide a revoluble table in whichis mounted a transverse shaft carrying clamping jaws and provided with acentral worm which is adapted to be engaged by a gear carried by a shaftwhich is operated by a crank.

With these various objects in view, my i11- vention consists in thenovel features of construction, arrangement and combination of parts,all of which will be hereinafter fully described and pointed out in theclaims.

In the accompanying drawings: Figure 1 is a side elevation of myimproved can opener. Fig. 2 is an end elevation of the same. Fig. 3 is asection taken just above the revolving table showing the table in planview. Fig. 4 is a vertical section through my improved can opener, partof the same being shown in elevation and the upper pora tion of thebracket arm being broken away. Fig. 5 is an enlarged detail verticalsection through the knife carrying member. Fig. 6 is a transversesection through the guideway and sliding block showing the manner ofsecuring said block in its adjusted position, and Fig. 7 is a sectiontaken on the line 7-7 of Fig. 1.

In carrying out my improved invention, I employ a casting A whichcomprises a base having an upwardly projecting yoke provided withjournal bearings in which is mounted a transverse shaft B which islocked within the bearings by a pin B and has a beveled gear C and acrank arm D secured upon one end for the purpose hereinafter fullydescribed. The yoke is connected together by a portion A which isprovided with an annular bearing A on which is revolubly mounted theannular bearing portion E of the hub of a beveled gear E which mesheswith the beveled gear G and is held in position thereon by a verticalshaft F which is secured within the portion A by a pin F and is providedwith an annular groove F in which fits a pin E carried by the hub of thebeveled gear E whereby the hub will be allowed to rotate freely aroundthe same and yet will be held firmly in position on the bearing ASecured on the top of the beveled gear E by screws G is a table Hprovided with outwardly projecting oppositely disposed portions H overthe ends of which are secured bearing plates H in which are mounted theends of a transverse shaft I which is provided with oppositely threadedend portions on which are mounted the downwardly projecting threadedlugs J of plates J which are rabbeted as clearly shown and adapted tofit within guideways K formed in the sides of the portions H so thatwhen the shaft is revolved the plates slide in the guideways toward eachother. The lugs J of the plates J work in grooves formed in the bottomof the table H and secured upon the top of the plates J are angularserrated jaws J 2 which are adapted to engage the opposite sides of acan when arranged upon the central circular supporting table H so as tosecurely lock the can thereon in such a manner that the same will berevolved with the table when the crank D is turned.

The shaft I is provided with a central worm I adapted to mesh with agear LT carried by a shaft L extending transversely through the table atright angles to the shaft I said shaft being mounted in bearings formedin the sides of the table and secured upon one end of the shaft L is asleeve L to which is hinged a crank arm L for operating the shaft and itwill be seen that when the crank L is turned the shaft I will be rotatedthrough the medium of the worm gear so as to cause the jaws to traveltoward each portion M of a bracket arm M which extends upwardly andinwardly as clearly shown and is provided with a vertical guideway N inwhich is slidably mounted a block 0 the opposite sides of which aregrooved to receive the guideway and the sides of the guideway areslotted longitudinally through which extends bolts 0 carrying thumb nutsO for locking the block in its adjusted position within the guideway andit will be seen that by loosening the thumb nuts the block can be movedup and down in the guideway. The top of the block 0 is provided with ahorizontal guideway which extends outwardly as shown at O in which isslidably mounted a plate P which has an integral vertical sleeve portionP at one end in which is slidably mounted a spring actuated shank Q, thelower end of which is bifurcated in which a knife Q is adapted to besecured and the upper end is provided with a knob Q which bears againsta coil spring Q which rests upon the top of the sleeve P and normallyhas the tendency to force the shank upwardly. The shank is provided witha series of notches Q adapted to be engaged by the beveled end of a pinR which is mounted within a boss formed in the side of the sleeve P andis provided with a ert an inward pressure upon the pin so as to forcethe pin in the notches of the shank, and it will be seen thatby thisarrangement the shank will be looked as the same is forced downwardlyfor the purpose hereinafter fully described. A screw R extends inwardlyfrom the opposite side of the sleeve P for guiding the shank and as theshank is forced downwardly the pin R is forced outwardly by the notchesof the same so that when released the pin will be forced inwardly intothe notches so as to hold the shank against the tension of the spring QThe plate P is provided with a set screw P for locking the same in itsadjusted position Within the guideway O and it will be seen that by thisarrangement the sleeve carrying the shank can be adjusted with respectto the can-carrying table so that any size or width can can be cut.

The operation of the device is as follows: A can is placed upon thetable H and the crank L is operated until the jaws are forced intoengagement with the opposite sides of the can so that the same will besecurely locked in position thereon. The thumb nuts 0 and the set screwP are then loosened and the sleeve carrying the shank provided with theknife is adjusted over the can so as to bring the knife into engagementwith the top of the same adjacent the edge and the set screw and thumbnuts are then tightened and the knob Q is given a slight blow so astoforce the pointed blade Q, through the top of 'the can and it will beseen that as the shank passes over the beveled end of the pin it will belocked by the same so as to hold the knife through the can and byoperating the crank D the table carrying the can will be rotated so asto cause the top of the can to be cut out.

From the foregoing description, it will be seen that I have provlded acan opener which is so constructed that it can be used for opening allsizes of circular cans in such a manner that the top of the can can becompletely cut out in order that the contents can be readily removed andit will be seen that with this device all danger of the person operatingthe same cutting his hand is prevented.

Having thus fully described my lnvention, what I claim as new and desireto secure by Letters Patent, is:

1. In a device of the kind described, a combination with a rotatable canholding table, said table being provided with radial grooves, of platesprovided with jaw portions having depending lugs extending into thegrooves of the table, a shaft having oppositely threaded end portions,saidportions working respectively in said lugs, a central worm formed onsaid shaft, and a worm gear meshing with said central worm, as and forthe purpose set forth.

- 2. In a can opener, a rotatable table centrally cut out, said tablehaving lateral extensions diametrically opposite each other,

said extensions having vertical end and side members, a shaft journaledin the end members of said extensions, the sides of the extensions beingundercut to form guide Ways, plates slidably held in said guide Ways,inwardly projecting V-shaped jaws carried by said plates, the said tablebeing grooved radially and along the central longitudinal line of saidlateral extensions the shaft above mentioned rest-ing in said grooves,said shaft having oppositely threaded portions, lugs carried by theplates and adapted to travel in said grooves, said shaft passing throughCopies of this patent may be obtained for said lugs, a central Worm uponthe shaft, said Worm being arranged in the central opening of the table,a Worm gear meshing With said central Worm, and a can supporting portionmounted upon the table and 00V- ering said central portion, as and forthe purpose set forth.

MICHAEL P. NEWCOMB.

five cents each, by addressing the Commissioner of Patents, Washington,I). 0.

